<template>
  <el-dialog
    width="500px"
    title="员工导入"
    :visible="showExcelDialog"
    @close="$emit('update:showExcelDialog', false)"
  >
    <el-row type="flex" justify="center">
      <div class="upload-excel">
        <input
          ref="excel-upload-input"
          class="excel-upload-input"
          type="file"
          accept=".xlsx, .xls"
          @change="onInput"
        >
        <div class="drop">
          <i class="el-icon-upload" />
          <el-button type="text" @click="onExport">下载导入模板</el-button>
          <span>将文件拖到此处或
            <el-button type="text" @click="onUpload">点击上传</el-button>
          </span>
        </div>
      </div>
    </el-row>
    <el-row type="flex" justify="end">
      <!-- update:props属性名，值 直接修改 .sync修饰符的属性值 -->
      <el-button size="mini" type="primary" @click="$emit('update:showExcelDialog', false)">取消</el-button>
    </el-row>
  </el-dialog>
</template>
<script>
import { getTemplateAPI, uploadExcelAPI } from '@/api/employee'
import { saveAs } from 'file-saver'

export default {
  props: {
    showExcelDialog: {
      type: Boolean,
      default: false
    }
  },
  methods: {
    // 获取上传的文件 添加点击事件 去拿表单的ref 监听表单的change 去哪事件对象中的file
    async onInput(e) {
      // 判断用户是否选择了上传的文件,选择了才触发接口
      if (e.target.files.length > 0) {
        try {
        // 把选择的文件包装到formData中
          const formDate = new FormData()
          formDate.append('file', e.target.files[0])
          // 调接口
          await uploadExcelAPI(formDate)
          // 提示用户 关闭弹出层
          this.$message.success('上传成功')
          this.$emit('update:showExcelDialog', false)
          //   提醒父组件刷新页面
          this.$emit('onSuccess')
        } catch (error) {
          console.log(error)
        } finally {
        // 清空input的值 让change事件每次都触发
          this.$refs['excel-upload-input'].value = ''
        }
      }
    //   console.log(e.target.files[0])
    },
    onUpload() {
      const ipt = this.$refs['excel-upload-input']
      //   console.log(ipt)
      // 打开电脑中文件
      ipt.click()
    },
    // 点击批量下载导入文件
    async  onExport() {
      const res = await getTemplateAPI()
      //   console.log(res)
      saveAs(res, '员工数据导出.xlsx')
      this.$message.success('下载成功')
      //   提醒父组件关闭弹窗
      this.$emit('update:showExcelDialog', false)
    }
  }
}
</script>

<style scoped lang="scss">
    .upload-excel {
      display: flex;
      justify-content: center;
      margin: 20px;
      width: 360px;
      height: 180px;
      align-items: center;
      color: #697086;
      .excel-upload-input {
        display: none;
        z-index: -9999;
      }
      .btn-upload,
      .drop {
        border: 1px dashed #dcdfe6;
        width: 100%;
        height: 100%;
        text-align: center;
        line-height: 160px;
        border-radius: 8px;
        display: flex;
        flex-direction: column;
        justify-content: center;
      }
      .drop {
        line-height: 40px;
        color: #bbb;
        i {
          font-size: 60px;
          display: block;
          color: #c0c4cc;
        }
      }
    }
</style>
